On-board multi-functional thermal-insulation and explosion-proof pressure steamer

ABSTRACT

An onboard multi-functional thermal-insulation and explosion-proof pressure steamer, relating to the technical field of heating cooking appliances, and in particular, to the field of cooking appliances mounted on a travelling apparatus, comprising a steamer body and a steamer outer cover covering the top of the steamer body, a steam pot being provided in the steamer body. The steam pot is provided in the steamer body to seal a steam container in the steam pot, and the steam pot is heated by means of the onboard heat energy, heat exchange is performed by means of a heat exchange device to generate high-temperature steam to heat the food material in the steam pot of the steam or to heat the water in a water tank.

TECHNICAL FIELD

The invention is an onboard multi-functional thermal-insulation andexplosion-proof pressure steamer that relates to the technical field ofheating cooking appliances, and in particular, to the field of cookingappliances mounted on a travelling apparatus.

BACKGROUND ART

The kitchen steamer is an intelligent modern kitchen cooking apparatuswith beautiful appearance, simple operation, clean and energy-saving andlarge capacity, which makes the food material heated and cooked by thedynamic steam balance technology and can retain the original nutrientcontents of the food material throughout the cooking process. Theexisting kitchen steamer products are generally mounted in the kitchencabinet according to the needs of users and the actual situation of thekitchen, and are combined with other kitchen appliances for use andinstallation.

Self-driving travel is a remarkable economic phenomenon in recent years.Various kinds of self-driving travel have attracted a large number oftourists and given rise to a large body of in-depth research andsubstantial investment in self-driving travel. It's really challengingto get a fresh hot meal anytime and anywhere during long distancedriving. The poor thermal efficiency of existing outdoor cookingappliances is only possible to make some boiled water for instantnoodles.

SUMMARY

In order to solve the above problems, the invention provides an onboardmulti-functional thermal-insulation and explosion-proof pressuresteamer, which can solve the hot water problems of eating and drinkingon the outside, and has the advantages of simple structure andconvenient use.

An onboard multi-functional thermal-insulation and explosion-proofpressure steamer, comprising a steamer body and a steamer outer covercovering the top of the steamer body, wherein a steam pot is provided inthe steamer body, multiple steam containers with an open and hollow endare provided in the steam pot, the steam containers are stacked from topto bottom orderly and sealed together, the steam container on the top iscovered with a steam container cover, and the steam container at thebottom is connected with the steam pot through a steam container elasticbase;

the steam pot is also covered with a steam pot cover; and

a heating device is connected to the steam pot.

Preferably, the steam pot comprises a steam pot body outer layer and asteam pot body inner layer. The steam pot body outer layer is sheathedon the exterior of the steam pot body inner layer, the top of the steampot body inner layer is connected with a broken bridge on the top of thesteam pot body outer layer, and an area between the steam pot body outerlayer and the steam pot body inner layer is arranged for vacuum. A steampot cooling ring is sheathed on the exterior of the steam pot body innerlayer, forming a closed cooling area between the steam pot body innerlayer and the steam pot cooling ring. The cooling area is connected witha refrigerator via a steam pipe passing through the steam pot body outerlayer.

Preferably, the steamer body is also provided with a remaining steamdischarge outlet and a steam exhaust port, an extractor fan is providedin the remaining steam discharge outlet, which is connected with a steamcollection ring provided on the steam pot and located above the steampot cover. The steam collection ring is hollow and annular, and fixedlyprovided on the top of the steam pot body inner layer, and an opening ofthe steam collection ring is provided on an annular surface of the steamcollection ring facing the center of the steam pot body inner layer. Thesteam pot body inner layer is connected with the interior of the steamcollection ring through an opening of the steam collection ring, and thesteam exhaust port of the steam collection ring provided on the steamcollection ring is connected with the remaining steam discharge outlet;

the steam exhaust port is connected with a broken bridge in the steampot through an exhaust steam pipe, and a pressure regulating valve isprovided on the steam exhaust port;

also comprising a steam pot inlet, wherein the steam pot inlet isprovided in the center at the bottom of the steam pot, and is connectedwith a broken bridge in the steam pot by passing through the steam potbody outer layer and the steam pot body inner layer.

Preferably, the pressure regulating valve comprises a hollow andcolumnar valve seat and a pressure regulating rod. One end of the valveseat is connected with a valve seat gland, and the other end thereof isconnected with a pressure regulating seat. The valve seat gland andpressure regulating seat are sealed and connected with an inner wall ofthe valve seat, an internal thread through-hole is provided on the valveseat gland, and one end of the pressure regulating rod is extended intothe valve seat and is in threaded connection with the internal threadthrough-hole on the valve seat;

a pressure regulating valve element is slidably provided in the valveseat, a bump is provided on one end of the pressure regulating valveelement facing the pressure regulating rod, and a blind hole is providedon the bump. A pressure regulating rod gland is sheathed on the bump,fixedly connected with the bump, and slidably connected with the valveseat. One end of the pressure regulating rod, which is extended into thevalve seat, passes through the through-hole on the pressure regulatingrod gland and is movably provided in the blind hole. A limiting shaftshoulder is provided on the pressure regulating rod, with a diametergreater than that of the through-hole on the pressure regulating rodgland. The limiting shaft shoulder is located in the area enclosed bythe pressure regulating rod gland and the pressure regulating valveelement;

two annular regulating valve sealing rings are provided and sheathed onthe pressure regulating valve element, and a steam inlet annular grooveis provided on the pressure regulating valve element between the twoannular regulating valve sealing rings. The central axis of the steaminlet annular groove and the central axis of the valve element are onthe same straight line. Multiple steam inlet channels are provided inthe steam inlet annular groove and all the central axes of the steaminlet channels are in the same plane, perpendicular to the central axisof the valve element. A steam inlet is provided on the valve seat andconnected with the steam inlet annular groove;

a steam flow channel is provided on one end of the pressure regulatingvalve element away from the pressure regulating rod, and the steam flowchannel is connected with the steam inlet channel;

a steam exhaust chamber is provided on one end of the valve seat awayfrom the pressure regulating rod, and a steam exhaust valve element anda spring are provided in the steam exhaust chamber; a steam exhaustsealing gasket is fixedly provided on the steam exhaust valve elementand arranged against the steam flow channel, and the steam exhaustchamber is connected with the steam flow channel through the steamexhaust sealing gasket;

a bolt hole is provided in the center of the pressure regulating seat, astroke regulating bolt passes through the bolt hole and is providedopposite to the steam exhaust valve element, one end of the spring isarranged against the steam exhaust valve element, and the other endthereof is arranged against the pressure regulating seat; a regulatingvalve steam exhaust port is provided on one end of the valve seatconnected with the pressure regulating seat, and the regulating valvesteam exhaust port is connected with the steam exhaust chamber through asteam exhaust channel on the pressure regulating seat.

Preferably, a steam container cover comprises a steam container body andfasteners provided on four sides of the steam container body, fastenergrooves are provided on four sides of an open end of the steamcontainer, and the fasteners are matched with the fastener grooves.

Preferably, the steam pot cover comprises a pot cover body, a pot coverlocking body is connected to the pot cover body, multiple chutes areprovided on the pot cover locking body, locking rods are slidablyprovided in the chutes, the locking rods are evenly arranged on the potcover locking body, and the locking rods are provided from the center ofthe pot cover locking body to the edge of the pot cover locking body;

the top of the steam pot is provided with clamping grooves with the samenumber as the locking rods, the clamping grooves are located in the samehorizontal plane, and the locking rods are matched and connected withthe clamping grooves;

one end of the locking rod is extended out from the pot cover lockingbody and is clamped in the clamping groove, the other end thereof isconnected with a driving device, and the driving device drives thelocking rods to extend or retract synchronously.

Preferably, the driving device comprises a locking knob, driving grooveswith the same number as the chutes are provided on the locking knob, oneend of the locking rod close to the center of the pot cover locking bodyis connected with the driving groove through a locking sliding pin, thelocking sliding pin is rotatably connected with the locking rod andslidably provided in the driving groove, and the central axes of thelocking sliding pin are vertical to the plane of the pot cover lockingbody;

the driving groove is provided from the center to the edge of thelocking knob, the locking knob is rotated, and the locking sliding pinslides in the driving groove to drive the locking rods to extend orretract.

Preferably, the onboard multi-functional thermal-insulation andexplosion-proof pressure steamer also comprises a pot cover locking lid,wherein the pot cover locking lid is connected with the pot coverlocking body through a regulating bolt provided at the center of the potcover locking lid, and the rotating central line of the locking knob andthe rotating central line of the regulating bolt are on the samestraight line;

the regulating bolt is in threaded connection with the pot cover lockingbody after passing through the pot cover locking lid and the lockingknob in turn, the pot cover body is slidably connected with the potcover locking body through multiple sliding connecting pins, a limitingbump is respectively provided on both ends of the sliding connectingpin, and the pot cover body and the pot cover locking body are locatedbetween two limiting bumps on the same sliding connecting pin;

a blind hole is provided at the center of the pot cover body, one end ofthe regulating bolt passing through the pot cover locking body isopposite to the blind hole; when the regulating bolt is extended outtowards the pot cover body, the regulating bolt is arranged against theblind hole;

the pot cover locking lid, the locking knob and the pot cover lockingbody are sheathed on the regulating bolt;

a rotary operating rod is provided on the locking knob, an arc rotaryoperating groove is provided on the position of the pot cover lockinglid corresponding to the rotary operating rod, one end of the rotaryoperating rod is fixedly connected with the locking knob, and the otherend thereof is provided towards the pot cover locking lid and isextended out from the rotary operating groove; the rotary operating rodslides along the rotary operating groove to drive the locking knob torotate.

Preferably, guide holes with the same number as the chutes are fixedlyprovided at the edge of the pot cover locking body, and one end of thelocking rod away from the center of the pot cover locking body isslidably provided in the guide hole.

Preferably, the onboard multi-functional thermal-insulation andexplosion-proof pressure steamer also comprises a locking safety pin,wherein the locking safety pin comprises a movable pin and ananti-release seat. One end of the movable pin is connected with asilicon rubber expansion and sealing gasket, the anti-release seat isfixedly connected with the pot cover body, the silicon rubber expansionand sealing gasket is provided in the area enclosed by the anti-releaseseat and the pot cover body, and this area is connected with theinterior of the steam pot; the other end of the movable pin isvertically extended out towards the pot cover locking body. Athrough-hole is provided on the pot cover locking body and located in achute, a safety hole is provided on the locking rod in this chute, andthe movable pin is matched with the safety hole. When the steam pressurein the steam pot rises, the movable pin is squeezed by the siliconrubber expansion and sealing gasket and extended out towards the lockingrod; when the steam pressure in the steam pot drops, the silicon rubberexpansion and sealing gasket is reset, and the movable pin is retracted.

Preferably, an annular sealing ring is provided between the pot coverbody and the steam pot.

Preferably, a water tank with an open and hollow upper end is alsoprovided in the steamer body, a water tank cover is provided on the openend of the water tank, and both the water tank and the steam pot arelocated in the area enclosed by the steamer body and the steamer outercover;

a water level gauge mounting hole, a temperature measuring probe hole, adrinking water pipe hole and a water filling nozzle are provided on thewater tank cover, a water level gauge is mounted in the water levelgauge mounting hole, and a temperature measuring probe is mounted in thetemperature measuring probe hole;

a telescopic drinking water pipe is provided in the drinking water pipehole, and the telescopic drinking water pipe comprises a telescopicouter pipe and a silicon rubber hose, wherein the telescopic outer pipeis sheathed on the exterior of the silicon rubber hose with one endextended out of the water tank as a water outlet end and the other endthereof located in the water tank as a water inlet end. A limiting bumpis provided on the telescopic outer pipe and arranged against the watertank through a telescopic spring, and the limiting bump is provided inthe water tank. One end of the silicon rubber hose is connected with awater outlet end of the telescopic outer pipe, and the other end thereofis connected with the interior of the water tank through a first waterpump;

the water tank is also connected with the heating device.

Preferably, the water tank comprises a water tank outer layer and awater tank inner layer, the water tank outer layer is sheathed on theexterior of the water tank inner layer, and the top of the water tankinner layer is sealed and connected with that of the water tank outerlayer;

the area enclosed by the water tank inner layer and the water tank outerlayer is a vacuum area.

Preferably, a water tank inlet is provided on the bottom of the watertank, the water tank inlet is connected with the interior of the watertank, and the water tank inlet is connected with the heating device.

Preferably, a temperature measuring hole is also provided on the watertank cover, a temperature measuring probe is provided in the temperaturemeasuring hole, and one end of the temperature measuring probe isextended into the water tank.

Preferably, the steamer outer cover comprises an annular steamer outercover seat, a steam pot outer cover body covering the steamer outercover seat, and a water tank outer cover body;

the steamer outer cover seat is in matched connection with the steamerbody, a partition plate is provided in the steamer outer cover seat, thearea in the steamer outer cover seat is divided into an area of thesteam pot and an area of the water tank by means of the partition plate;the area of the steam pot is covered with the steam pot outer coverbody, and the area of the water tank is covered with the water tankouter cover body;

a bump is provided on the partition plate, a rotating shaft is rotatablyconnected to the bump, and both the water tank outer cover body and thesteam pot outer cover body are rotatably connected with the rotatingshaft;

two ends of the rotating shaft are rotatably connected with twocorresponding sidewalls of the steamer outer cover seat, respectively;and two ends of the partition plate are also fixedly connected with twocorresponding sidewalls of the steamer outer cover seat, respectively.

Preferably, the onboard multi-functional thermal-insulation andexplosion-proof pressure steamer also comprises a car washing watertank, a car washing nozzle connecting pipe is connected to the carwashing water tank, and a second water pump is provided on the carwashing nozzle connecting pipe;

a bendable heat exchange tube is provided in the car washing water tank,and the heat exchange tube is connected with the heating device.

Preferably, one end of the heating device is connected with the watertank through a heating device water inlet connecting pipe, the other endthereof is connected with the steam pot inlet through a steam pot steamheating connecting pipe, and a first solenoid valve is provided on thesteam pot steam heating connecting pipe;

a water tank steam heating connecting pipe is connected to the steam potsteam heating connecting pipe through a tee, and one end of the watertank steam heating connecting pipe away from the steam pot steam heatingconnecting pipe is connected with the water tank inlet;

a steam heating outlet is provided on the top of the water tank, thesteam heating outlet is connected with one end of the heat exchange tubethrough a car washing water tank remaining steam return pipe, the otherend of the heat exchange tube is connected with the steam pot steamheating connecting pipe through a car washing water tank heatingconnecting pipe, and a third solenoid valve is provided on the carwashing water tank heating connecting pipe;

the first water pump is provided on the heating device water inletconnecting pipe;

also comprising a drinking boiled water connecting pipe, one end of thedrinking boiled water connecting pipe is connected with the heatingdevice water inlet connecting pipe between the first water pump and theheating device, the other end thereof is extended into the water tankand is connected with one end of the silicon rubber hose away from thewater outlet end of a telescopic outer pipe, and a fourth solenoid valveis provided on the drinking boiled water connecting pipe.

Preferably, the heating device is an internal combination engine exhaustgas remaining heat extraction device that is connected with an internalcombination engine exhaust device.

Preferably, the internal combination engine exhaust gas remaining heatextraction device comprises multiple branch pipes, a flange plate isprovided between the internal combination engine and the internalcombination engine exhaust device, one end of each of the branch pipesis connected with a gas combination pipe, and the other end thereof isconnected with the flange plate; a heat conversion device is provided ineach branch pipe, a one-way flow heating channel and a high-temperatureexhaust gas channel closed to each other are provided in the heatconversion device, and heating channels in the branch pipes areconnected successively to form a water vapor channel;

one end of the water vapor channel is connected with the water tankthrough the heating device water inlet connecting pipe, and the otherend thereof is connected with the steam pot steam heating connectingpipe.

Preferably, the heat conversion device is characterized into that aone-way flow heating channel and a high-temperature exhaust gas channelindependent from each other are provided in a double-deck chamber, thesurface of the high-temperature exhaust gas channel has a fin-likestructure, and the water vapor channel has a return-type structure.

Preferably, the heat conversion device has a wedge heat exchangestructure, the high-temperature exhaust gas channel surface has anannular fin-like structure, and the water vapor channel is provided atthe tube pass, and the high-temperature exhaust gas channel is providedat the center and the shell pass.

Preferably, the tube pass shape of the water vapor channel has asinusoidal wave surrounding structure.

Or preferably, the heat conversion device is a cylindrical tubular heatconversion device, and two ends thereof have a tapered structure, thewater vapor channel is provided between the heat conversion deviceheating outer layer and the heat conversion device heating inner layer,the water vapor channel is a rectangular water vapor channel, thesurfaces of the heat conversion device heating outer layer and the heatconversion device heating inner layer have a fin-like structure, thetube pass of the water vapor channel has an S-curve surrounding shape,the water vapor channel is provided at the tube pass, and thehigh-temperature exhaust gas channel is provided at an inner exhaust gasflow chamber and an outer exhaust gas flow chamber in the heatconversion device.

Or preferably, the heat conversion device is rectangular, the watervapor channel is provided in the heat conversion device, a platefin-like heating outer layer of the heat conversion device is providedon the upper and lower parts of the water vapor channel respectively,the tube pass of the water vapor channel has a plate return-type shape,the water vapor channel is provided at the tube pass, and thehigh-temperature exhaust gas channel is provided at the outer exhaustgas flow chamber between the heat conversion device heating outer layerand the branch pipe.

Preferably, the heating device is an electric heating steam generator,the electric heating steam generator comprises a steam shell and anelectric heating pipe provided in the steam shell, a water inlet and asteam outlet are provided on the steam shell, the steam outlet isconnected with the steam pot steam heating connecting pipe, and thewater inlet is connected with the heating device water inlet connectingpipe.

The invention features simple structure and convenient use. The steampot is provided in the steamer body to seal a steam container in thesteam pot, and the steam pot is heated by the onboard heat energy, theinvention uses high-temperature exhaust gas from the internal combustionengine as the heat source, heat exchange is performed by means of a heatexchange device to generate high-temperature steam to heat the foodmaterial in the steam pot of the steam or to heat the water in a watertank, having the advantages of high efficiency and energy-saving, safetyand sanitation, and quick and convenient use, etc. A steam pot cover hasa double-layer thermal-insulation structure, and by means of theadjustment of a bolt, a locking rod is brought into close connectionwith the steamer body, thereby achieving the explosion-proof purpose; inaddition, the steam pot and the steam pot cover are sealed by means ofan annular sealing ring, and a positive or negative pressure can beformed in the steam pot, the positive pressure accelerates cooking thefood material, and the negative pressure facilitates preserving the foodmaterial.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a structure diagram of the invention;

FIG. 2 is a structure diagram of the invention from another perspective;

FIG. 3 is a schematic diagram of the connection relationship between thesteamer body and the steamer outer cover;

FIG. 4 is an exploded view of the steamer body;

FIG. 5 is a top view of the steamer body;

FIG. 6 is a section view A-A of FIG. 5;

FIG. 7 is a top view of the steamer body with the steam pot cover andthe water tank cover removed;

FIG. 8 is a structure diagram of the steam pot cover;

FIG. 9 is a section view B-B of FIG. 8;

FIG. 10 is an exploded view of the steam pot cover;

FIG. 11 is an exploded view of the steamer outer cover;

FIG. 12 is a structure diagram of the pressure regulating valve; and

FIG. 13 is a structure diagram of the locking safety pin.

SIGNS OF DRAWINGS

-   1—steamer body,-   11—steam pot, 1101—steam pot body outer layer, 1102—steam pot body    inner layer, 1103—steam pot inlet, 1104—steam exhaust port,    1105—remaining steam discharge outlet, 1107—steam pot cooling ring,-   12—water tank, 1201—water tank outer layer, 1202—water tank inner    layer, 1203—water tank inlet, 1205—water level gauge mounting hole,    1206—drinking water pipe hole,-   13—pressure regulating valve, 1301—pressure regulating rod,    1302—valve seat gland, 1303—valve seat, 1304—pressure regulating rod    gland, 1305—regulating valve sealing ring, 1306—steam inlet,    1307—pressure regulating valve element, 1308—steam exhaust sealing    gasket, 1309—steam exhaust valve element, 1310—spring, 1311—pressure    regulating seat, 1312—stroke regulating bolt, 1313—regulating valve    steam exhaust port,-   14—steam pot cover, 1401—pot cover body, 1402—pot cover locking    body, 1403—locking rod, 1404—locking knob, 1405—locking sliding pin,    1406—regulating bolt, 1407—pot cover locking lid, 1408—sealing ring,    1410—sliding connecting pin, 1411—rotary operating rod, 1412—locking    safety pin, 14091—movable pin, 14092—anti-release seat,    14093—silicon rubber expansion and sealing gasket,-   15—water tank cover, 16—steam collection ring, 17—steam container    elastic base, 18—steam container, 19—steam container cover,    110—water level gauge, 111—temperature measuring probe,    112—telescopic drinking water pipe, 1121—telescopic outer pipe,    1122—silicon rubber hose,-   2—steamer outer cover, 21—steamer outer cover seat, 22—steam pot    outer cover body, 23—water tank outer cover body, 24—partition    plate, 25—rotating shaft,-   31—the first solenoid valve, 32—the second solenoid valve, 33—the    third solenoid valve, 34—the fourth solenoid valve,-   41—the first water pump, 42—the second water pump,-   5—extractor fan,-   61—steam pot steam heating connecting pipe, 62—water tank steam    heating connecting pipe, 63—car washing water tank heating    connecting pipe, 64—car washing water tank remaining steam return    pipe, 65—car washing nozzle connecting pipe, 66—drinking boiled    water connecting pipe, 67—heating device water inlet connecting pipe-   7—car washing water tank,-   8—internal combination engine exhaust gas remaining heat extraction    device.

DESCRIPTION OF EMBODIMENTS

An onboard multi-functional thermal-insulation and explosion-proofpressure steamer comprises a steamer body 1 and a steamer outer cover 2covering the top of the steamer body 1, wherein a steam pot 11 isprovided in the steamer body 1, multiple steam containers 18 with anopen and hollow end are provided in the steam pot 11, the steamcontainers 18 are stacked from top to bottom orderly and sealedtogether, the steam container 18 on the top is covered with a steamcontainer cover 19, and the steam container 18 at the bottom isconnected with the steam pot 11 through a steam container elastic base17;

the steam pot 11 is also covered with a steam pot cover 14; and

a heating device is connected to the steam pot 11.

The steam pot 11 comprises a steam pot body outer layer 1101 and a steampot body inner layer 1102. The steam pot body outer layer 1101 issheathed on the exterior of the steam pot body inner layer 1102, the topof the steam pot body inner layer 1102 is connected with a broken bridgeon the top of the steam pot body outer layer 1101, and an area betweenthe steam pot body outer layer 1101 and the steam pot body inner layer1102 is arranged for vacuum. A steam pot cooling ring 1107 is sheathedon the exterior of the steam pot body inner layer 1102, forming a closedcooling area between the steam pot body inner layer 1102 and the steampot cooling ring 1107. The cooling area is connected with a refrigerator(model: TEC1-12710) via a steam pipe passing through the steam pot bodyouter layer 1101.

The steamer body 1 is also provided with a remaining steam dischargeoutlet 1105 and a steam exhaust port 1104, an extractor fan 5 isprovided in the remaining steam discharge outlet 1105, which isconnected with a steam collection ring 16 provided on the steam pot 11and located above the steam pot cover 1. The steam collection ring 16 ishollow and annular, and fixedly provided on the top of the steam potbody inner layer 1102, and an opening of the steam collection ring 16 isprovided on an annular surface of the steam collection ring 16 facingthe center of the steam pot body inner layer 1102. The steam pot bodyinner layer 1102 is connected with the interior of the steam collectionring 16 through an opening of the steam collection ring 16, and thesteam exhaust port 1104 provided on the steam collection ring 16 isconnected with the remaining steam discharge outlet 1105;

the steam exhaust port 1104 is connected with a broken bridge in thesteam pot 11 through an exhaust steam pipe, and a pressure regulatingvalve 13 is provided on the steam exhaust port 1104;

also comprising a steam pot inlet 1103, wherein the steam pot inlet 1103is provided in the center at the bottom of the steam pot 11, and isconnected with a broken bridge in the steam pot 11 by passing throughthe steam pot body outer layer 1101 and the steam pot body inner layer1102.

The pressure regulating valve 13 comprises a hollow and columnar valveseat 1303 and a pressure regulating rod 1301. One end of the valve seat1303 is connected with a valve seat gland 1302, and the other endthereof is connected with a pressure regulating seat 1311. The valveseat gland 1302 and pressure regulating seat 1311 are sealed andconnected with an inner wall of the valve seat 1303, an internal threadthrough-hole is provided on the valve seat gland 1302, and one end ofthe pressure regulating rod 1301 is extended into the valve seat 1303and is in threaded connection with the internal thread through-hole onthe valve seat 1303;

a pressure regulating valve element 1307 is slidably provided in thevalve seat 1303, a bump is provided on one end of the pressureregulating valve element 1307 facing the pressure regulating rod 1301, ablind hole is provided on the bump. A pressure regulating rod gland 1304is sheathed on the bump, fixedly connected with the bump, and slidablyconnected with the valve seat 1303. One end of the pressure regulatingrod 1301, which is extended into the valve seat 1303, passes through thethrough-hole on the pressure regulating rod gland 1304 and is movablyprovided in the blind hole. A limiting shaft shoulder is provided on thepressure regulating rod 1301, with a diameter greater than that of thethrough-hole on the pressure regulating rod gland 1304. The limitingshaft shoulder is located in the area enclosed by the pressureregulating rod gland 1304 and the pressure regulating valve element1307;

two annular regulating valve sealing rings 1305 are provided andsheathed on the pressure regulating valve element 1307, and a steaminlet annular groove is provided on the pressure regulating valveelement 1307 between the two annular regulating valve sealing rings1305. The central axis of the steam inlet annular groove and the centralaxis of the valve element are on the same straight line. Multiple steaminlet channels are provided in the steam inlet annular groove and allthe central axes of the steam inlet channels are in the same plane,perpendicular to the central axis of the valve element. A steam inlet1306 is provided on the valve seat 1303 and connected with the steaminlet annular groove;

a steam flow channel is provided on one end of the pressure regulatingvalve element 1307 away from the pressure regulating rod 1301, and thesteam flow channel is connected with the steam inlet channel;

a steam exhaust chamber is provided on one end of the valve seat 1303away from the pressure regulating rod 1301, and a steam exhaust valveelement 1309 and a spring 1310 are provided in the steam exhaustchamber; a steam exhaust sealing gasket 1308 is fixedly provided on thesteam exhaust valve element 1309 and arranged against the steam flowchannel, and the steam exhaust chamber is connected with the steam flowchannel through the steam exhaust sealing gasket 1308;

a bolt hole is provided in the center of the pressure regulating seat1311, a stroke regulating bolt 1312 passes through the bolt hole and isprovided opposite to the steam exhaust valve element 1309, one end ofthe spring 1301 is arranged against the steam exhaust valve element1309, and the other end thereof is arranged against the pressureregulating seat 1311; a regulating valve steam exhaust port 1313 isprovided on one end of the valve seat 1303 connected with the pressureregulating seat 1311, and the regulating valve steam exhaust port 1313is connected with the steam exhaust chamber through a steam exhaustchannel on the pressure regulating seat 1311.

When the pressure regulating valve element 1307 and the steam exhaustsealing gasket 1308 are not in contact, the steam inlet 1306 isconnected with the regulating valve steam exhaust port 1313 through thesteam inlet channel, steam exhaust chamber and steam exhaust channelconnected with each other, and the pressure regulating valve 13 is atthe normal pressure.

Rotate the pressure regulating rod 1301, the pressure regulating rod1301 is extended into the valve seat 1303 to squeeze the pressureregulating valve element 1307, so that the pressure regulating valveelement 1307 is in contact with the steam exhaust sealing gasket 1308,the spring 1310 is compressed by means of the adjustment of the pressureregulating seat 1311, the steam exhaust valve element 1309 obtains thepreset pressure of the spring 1310, the steam arrives at the steamexhaust sealing gasket 1308 through the steam inlet 1306 and isdischarged from the regulating valve steam exhaust port 1313 by means ofovercoming the pressure of the steam exhaust valve element 1309 obtainedfrom the spring 1310, and the pressure regulating valve 13 is at apreset high pressure.

Continue to rotate the pressure regulating rod 1301, the pressureregulating rod 1301 will continue to be extended into the valve seat1303, so that the steam exhaust valve element 1309 will be in closecontact with the stroke regulating bolt 1312, the steam inlet 1306 andthe regulating valve steam exhaust port 1313 are completely sealed andclosed through the steam exhaust sealing gasket 1308, and the pressurein the steam pot 11 is sealed by the pressure regulating valve 13.

The steam container cover 19 comprises a steam container body andfasteners provided on four sides of the steam container body, fastenergrooves are provided on four sides of an open end of the steam container18, and the fasteners are matched with the fastener grooves.

The steam pot cover 14 comprises a pot cover body 1401, a pot coverlocking body 1402 is connected to the pot cover body 1401, multiplechutes are provided on the pot cover locking body 1402, locking rods1403 are slidably provided in the chutes, the locking rods 1403 areevenly arranged on the pot cover locking body 1402, and the locking rods1403 are provided from the center of the pot cover locking body 1402 tothe edge of the pot cover locking body 1402;

the top of the steam pot 11 is provided with clamping grooves with thesame number as the locking rods 1403, the clamping grooves are locatedin the same horizontal plane, and the locking rods 1403 are matched andconnected with the clamping grooves;

one end of the locking rod 1403 is extended out from the pot coverlocking body 1402 and is clamped in the clamping groove, the other endthereof is connected with a driving device, and the driving devicedrives the locking rods 1403 to extend or retract synchronously.

The driving device comprises a locking knob 1404, driving grooves withthe same number as the chutes are provided on the locking knob 1404, oneend of the locking rod 1403 close to the center of the pot cover lockingbody 1402 is connected with the driving groove through a locking slidingpin 1405, the locking sliding pin 1405 is rotatably connected with thelocking rod 1403 and slidably provided in the driving groove, and thecentral axes of the locking sliding pin 1405 are vertical to the planeof the pot cover locking body 1402;

the driving groove is provided from the center to the edge of thelocking knob 1404, the locking knob 1404 is rotated, and the lockingsliding pin 1405 slides in the driving groove to drive the locking rods1403 to extend or retract.

The onboard multi-functional thermal-insulation and explosion-proofpressure steamer also comprises a pot cover locking lid 1407, whereinthe pot cover locking lid 1407 is connected with the pot cover lockingbody 1402 through a regulating bolt 1406 provided at the center of thepot cover locking lid 1407, and the rotating central line of the lockingknob 1404 and the rotating central line of the regulating bolt 1406 areon the same straight line;

the regulating bolt 1406 is in threaded connection with the pot coverlocking body 1402 after passing through the pot cover locking lid 1407and the locking knob 1404 in turn, the pot cover body 1401 is slidablyconnected with the pot cover locking body 1402 through multiple slidingconnecting pins 1410, a limiting bump is respectively provided on bothends of the sliding connecting pin 1410, and the pot cover body 1401 andthe pot cover locking body 1402 are located between two limiting bumpson the same sliding connecting pin 1410;

a blind hole is provided at the center of the pot cover body 1401, oneend of the regulating bolt 1406 passing through the pot cover lockingbody 1402 is opposite to the blind hole; when the regulating bolt 1406is extended out towards the pot cover body 1401, the regulating bolt1406 is arranged against the blind hole;

the pot cover locking lid 1407, the locking knob 1404 and the pot coverlocking body 1402 are sheathed on the regulating bolt 1406;

a rotary operating rod 1411 is provided on the locking knob 1404, an arcrotary operating groove is provided on the position of the pot coverlocking lid 1407 corresponding to the rotary operating rod 1411, one endof the rotary operating rod 1411 is fixedly connected with the lockingknob 1404, and the other end thereof is provided towards the pot coverlocking lid 1407 and is extended out from the rotary operating groove;the rotary operating rod 1411 slides along the rotary operating grooveto drive the locking knob 1404 to rotate.

Guide holes with the same number as the chutes are fixedly provided atthe edge of the pot cover locking body 1402, and one end of the lockingrod 1403 away from the center of the pot cover locking body 1402 isslidably provided in the guide hole.

The onboard multi-functional thermal-insulation and explosion-proofpressure steamer also comprises a locking safety pin 1412, wherein thelocking safety pin 1412 comprises a movable pin 14091 and ananti-release seat 14092. One end of the movable pin 14091 is connectedwith a silicon rubber expansion and sealing gasket 14093, theanti-release seat 14092 is fixedly connected with the pot cover body1401, the silicon rubber expansion and sealing gasket 14093 is providedin the area enclosed by the anti-release seat 14092 and the pot coverbody 1401, and this area is connected with the interior of the steam pot11; the other end of the movable pin 14091 is vertically extended outtowards the pot cover locking body 1402. A through-hole is provided onthe pot cover locking body 1402 and located in a chute, a safety hole isprovided on the locking rod 1403 in this chute, and the movable pin14091 is matched with the safety hole. When the steam pressure in thesteam pot 11 rises, the movable pin 14091 is squeezed by the siliconrubber expansion and sealing gasket 14093 and extended out towards thelocking rod 1403; when the steam pressure in the steam pot 11 drops, thesilicon rubber expansion and sealing gasket 14093 is reset, and themovable pin 14091 is retracted.

The annular sealing ring (1408) is provided between the pot cover body1401 and the steam pot 11.

A water tank 12 with an open and hollow upper end is also provided inthe steamer body 1, a water tank cover 15 is provided on the open end ofthe water tank 12, and both the water tank 12 and the steam pot 11 arelocated in the area enclosed by the steamer body 1 and the steamer outercover 2;

a water level gauge mounting hole 1205, a temperature measuring probehole, a drinking water pipe hole 1206 and a water filling nozzle areprovided on the water tank cover 15, a water level gauge 111 is mountedin the water level gauge mounting hole 1205, and a temperature measuringprobe 110 is mounted in the temperature measuring probe hole;

a telescopic drinking water pipe 112 is provided in the drinking waterpipe hole 1206, and the telescopic drinking water pipe 112 comprises atelescopic outer pipe 1121 and a silicon rubber hose 1122, wherein thetelescopic outer pipe 1121 is sheathed on the exterior of the siliconrubber hose 1122, with one end extended out of the water tank 12 as awater outlet end and the other end thereof located in the water tank 12as a water inlet end. A limiting bump is provided on the telescopicouter pipe 1121, the limiting bump is arranged against the water tank 12through a telescopic spring 1310, and the limiting bump is provided inthe water tank 12. One end of the silicon rubber hose 1122 is connectedwith a water outlet end of the telescopic outer pipe 1121, and the otherend thereof is connected with the interior of the water tank 12 througha first water pump 41;

the water tank 12 is also connected with the heating device.

The water tank 12 comprises a water tank outer layer 1201 and a watertank inner layer 1202, the water tank outer layer 1201 is sheathed onthe exterior of the water tank inner layer 1202, and the top of thewater tank inner layer 1202 is sealed and connected with that of thewater tank outer layer 1201;

the area enclosed by the water tank inner layer 1202 and the water tankouter layer 1201 is a vacuum area.

A water tank inlet 1203 is provided on the bottom of the water tank 12,the water tank inlet 1203 is connected with the interior of the watertank 12, and the water tank inlet 1203 is connected with the heatingdevice.

A temperature measuring hole is also provided on the water tank cover15, a temperature measuring probe 111 is provided in the temperaturemeasuring hole, and one end of the temperature measuring probe 111 isextended into the water tank 12.

The steamer outer cover 2 comprises an annular steamer outer cover seat21, a steam pot outer cover body 22 covering the steamer outer coverseat 21, and a water tank outer cover body 23;

the steamer outer cover seat 21 is in matched connection with thesteamer body 1, a partition plate 24 is provided in the steamer outercover seat 21, the area in the steamer outer cover seat 21 is dividedinto an area of the steam pot 11 and an area of the water tank 12 bymeans of the partition plate 24; the area of the steam pot 11 is coveredwith the steam pot outer cover body 22, and the area of the water tank12 is covered with the water tank outer cover body 23;

a bump is provided on the partition plate 24, a rotating shaft 25 isrotatably connected to the bump, and both the water tank outer coverbody 23 and the steam pot outer cover body 22 are rotatably connectedwith the rotating shaft 25;

two ends of the rotating shaft 25 are rotatably connected with twocorresponding sidewalls of the steamer outer cover seat 21,respectively; and two ends of the partition plate 24 are also fixedlyconnected with two corresponding sidewalls of the steamer outer coverseat 21, respectively.

Preferably, the onboard multi-functional thermal-insulation andexplosion-proof pressure steamer also comprises a car washing water tank7, a car washing nozzle connecting pipe 65 is connected to the carwashing water tank 7, and a second water pump 42 is provided on the carwashing nozzle connecting pipe 65;

a bendable heat exchange tube is provided in the car washing water tank7, and the heat exchange tube is connected with the heating device.

One end of the heating device is connected with the water tank 12through a heating device water inlet connecting pipe 67, the other endthereof is connected with the steam pot inlet 1103 through a steam potsteam heating connecting pipe 61, and a first solenoid valve 31 isprovided on the steam pot steam heating connecting pipe 61;

a water tank steam heating connecting pipe 62 is connected to the steampot steam heating connecting pipe 61 through a tee, and one end of thewater tank steam heating connecting pipe 62 away from the steam potsteam heating connecting pipe 61 is connected with the water tank inlet1203;

a steam heating outlet is provided on the top of the water tank 12, thesteam heating outlet is connected with one end of the heat exchange tubethrough a car washing water tank remaining steam return pipe 64, theother end of the heat exchange tube is connected with the steam potsteam heating connecting pipe 61 through a car washing water tankheating connecting pipe 63, and a third solenoid valve 33 is provided onthe car washing water tank heating connecting pipe 63;

the first water pump 41 is provided on a water inlet connecting pipe ofthe internal combination engine exhaust gas remaining heat extractiondevice 8;

the first water pump 41 is provided on the heating device water inletconnecting pipe 67;

also comprising a drinking boiled water connecting pipe 66, one end ofthe drinking boiled water connecting pipe 66 is connected with theheating device water inlet connecting pipe 67 between the first waterpump 41 and the heating device, the other end thereof is extended intothe water tank 12 and is connected with one end of the silicon rubberhose 1122 away from the water outlet end of the telescopic outer pipe1121, and a fourth solenoid valve 34 is provided on the drinking boiledwater connecting pipe 66.

The heating device is an internal combination engine exhaust gasremaining heat extraction device 8 that is connected with an internalcombination engine exhaust device.

The internal combination engine exhaust gas remaining heat extractiondevice 8 comprises multiple branch pipes, a flange plate is providedbetween the internal combination engine and the internal combinationengine exhaust device, one end of each of the branch pipes is connectedwith a gas combination pipe, and the other end thereof is connected withthe flange plate; a heat conversion device is provided in each branchpipe, a one-way flow heating channel and a high-temperature exhaust gaschannel closed to each other are provided in the heat conversion device,and heating channels in the branch pipes are connected successively toform a water vapor channel;

one end of the water vapor channel is connected with the water tank 12through the heating device water inlet connecting pipe 67, and the otherend thereof is connected with the steam pot steam heating connectingpipe 61.

The heat conversion device is characterized into that a one-way flowheating channel and a high-temperature exhaust gas channel independentfrom each other are provided in a double-deck chamber, the surface ofthe high-temperature exhaust gas channel has a fin-like structure, andthe water vapor channel has a return-type structure. Or, the heatconversion device has a wedge heat exchange structure, thehigh-temperature exhaust gas channel surface has an annular fin-likestructure, and the water vapor channel is provided at the tube pass, andthe high-temperature exhaust gas channel is provided at the center andthe shell pass.

The tube pass shape of the water vapor channel has a sinusoidal wavesurrounding structure.

The heat conversion device is a cylindrical tubular heat conversiondevice, and two ends thereof have a tapered structure, the water vaporchannel is provided between the heat conversion device heating outerlayer and the heat conversion device heating inner layer, the watervapor channel is a rectangular water vapor channel, the surfaces of theheat conversion device heating outer layer and the heat conversiondevice heating inner layer have a fin-like structure, the tube pass ofthe water vapor channel has an S-curve surrounding shape, the watervapor channel is provided at the tube pass, and the high-temperatureexhaust gas channel is provided at an inner exhaust gas flow chamber andan outer exhaust gas flow chamber in the heat conversion device.

The heat conversion device is rectangular, the water vapor channel isprovided in the heat conversion device, a plate fin-like heating outerlayer of the heat conversion device is provided on the upper and lowerparts of the water vapor channel respectively, the tube pass of thewater vapor channel has a plate return-type shape, the water vaporchannel is provided at the tube pass, and the high-temperature exhaustgas channel is provided at the outer exhaust gas flow chamber betweenthe heat conversion device heating outer layer and the branch pipe.

Or, the heating device is an electric heating steam generator, theelectric heating steam generator comprises a steam shell and an electricheating pipe provided in the steam shell, a water inlet and a steamoutlet are provided on the steam shell, the steam outlet is connectedwith the steam pot steam heating connecting pipe 61, and the water inletis connected with the heating device water inlet connecting pipe 67. Anonboard multi-functional thermal-insulation and explosion-proof pressuresteamer can be placed in the kitchen or other places with power supplyfor use, when the heating device is the electric heating steamgenerator. An onboard multi-functional thermal-insulation andexplosion-proof pressure steamer can be placed on the vehicle for use ifthe heating device is the internal combination engine exhaust gasremaining heat extraction device (8).

Using method of the steam pot 11: put the food material into the steamcontainer (18), seal it well, and put it on the steam container elasticbase 17; cover it with the steam pot cover 14, rotate the rotaryoperating rod 1411 on the locking knob 1404, extend the locking rod 1403and insert it into the clamping groove of the steamer body, turn theregulating bolt 1406, move the pot cover locking body 1402 upwards, andthe locking rod 1403 and the clamping groove are locked; continue toturn the regulating bolt 1406, extend the regulating bolt 1406 towardsthe pot cover body 1401 and against the blind hole on the pot cover body1401, move the pot cover body 1401 downwards, seal the steam container18 in the steam pot 11 through the annular sealing ring 1408, compressthe steam container 18 with the pot cover body 1401 through the elasticbase, and the pressure regulating valve 13 is set in a presethigh-pressure state. Open the first water pump 41 and the first solenoidvalve 31, close the second water pump 42, the second solenoid valve 32,the third solenoid valve 33 and the fourth solenoid valve 34, and thehigh-temperature steam generated by the internal combination engineexhaust gas remaining heat extraction device 8 enters into the steam pot11 of the steamer body through the steam pot inlet 1103. With thecontinuous flow of steam, the pressure in the steam pot 11 rises, themovable pin 14091 in the locking safety pin 1412 is moved upwards andinserted into the safety hole on the locking rod 1403, so as to avoidthat the steam pot cover 14 is opened when there is pressure in thesteam pot 11, and that the pressure in the steam pot 11 exceeds thepreset pressure of the pressure regulating valve 13. Thehigh-temperature and high-pressure steam is discharged through theregulating valve steam exhaust port 1313 of the pressure regulatingvalve 13 to realize the functions of steaming, boiling and stewing thefood material in the steam container 18.

Preservation of the food material: after the steam pot 11's functions ofsteaming, boiling and stewing the food material in the steam container18 are completed, the remaining steam and condensed water in the steampot 11 will be discharged through the steam pot inlet 1103, the pressureregulating rod 1301 of the pressure regulating valve 13 is rotated, sothat the steam exhaust valve element 1309 is in close contact with thestroke regulating bolt 1312, at this moment, the pressure in the steampot 11 is sealed by the pressure regulating valve 13, the steam potcooling ring 1107 is turned on to cool the steam pot 11, the temperatureof the steam container 18 drops rapidly, and the pressure in the steampot 11 drops as well. As a certain vacuum is formed in the steam pot 11due to the sealing of the silicon rubber expansion and sealing gasket14093 of the locking safety pin 1412 and the sealing of the pressureregulating valve 13, the negative pressure in the steam pot 11 is sealedby the annular sealing ring 1408, and a certain vacuum in the steam pot11 can keep the cooked food material fresh, improve the taste of thefood material, and can store the cooked food material for a long time.

Open the first water pump 41 and the second solenoid valve 32, close thesecond water pump 42, the first solenoid valve 31, the third solenoidvalve 33 and the fourth solenoid valve 34, the high-temperature steamgenerated by the internal combination engine exhaust gas remaining heatextraction device 8 enters into the water tank 12 through the water tankinlet 1203 on the steamer body to heat the steam of the water in thewater tank 12, and close the first water pump 41 and the second solenoidvalve 32 when the water temperature reaches the preset temperature. Whendrinking water, open the first pump 41 and the fourth solenoid valve 34,close the first solenoid valve 31, the second solenoid valve 32, thethird solenoid valve 33 and the second water pump 42, the boiled wateris injected into the water cup through the telescopic water pipe 112,for the driver and passengers to drink.

Open the first water pump 41 and the third solenoid valve 33, close thesecond water pump 42, the first solenoid valve 31, the second solenoidvalve 32 and the fourth solenoid valve 34, the high-temperature steamgenerated by the internal combination engine exhaust gas remaining heatextraction device 8 enters into the heat exchange pipe in the carwashing water tank 7 through the car washing water tank heatingconnecting pipe 63 to circularly heat the water in the car washing watertank 7, and the remaining steam from the heat exchange pipe flows backinto the water tank 12 through the car washing water tank remainingsteam return pipe 64. Close the first water pump 41 and the thirdsolenoid valve 33 when the water temperature of the car washing watertank 7 reaches the set value, and open the second water pump 42 to washthe car with hot water.

What is claimed is:
 1. An onboard multi-functional thermal-insulationand explosion-proof pressure steamer, comprising a steamer body (1) anda steamer outer cover (2) covering the top of the steamer body (1),wherein a steam pot (11) is provided in the steamer body (1). Multiplesteam containers (18) with an open and hollow end are provided in thesteam pot (11), and the steam containers (18) are stacked from top tobottom orderly and sealed together. The steam container (18) on the topis covered with a steam container cover (19), and the steam container(18) at the bottom is connected with the steam pot (11) through a steamcontainer elastic base (17); the steam pot (11) is also covered with asteam pot cover (14); and a heating device is connected to the steam pot(11).
 2. The onboard multi-functional thermal-insulation andexplosion-proof pressure steamer according to claim 1, wherein the steampot (11) comprises a steam pot body outer layer (1101) and a steam potbody inner layer (1102). The steam pot body outer layer (1101) issheathed on the exterior of the steam pot body inner layer (1102), thetop of the steam pot body inner layer (1102) is connected with a brokenbridge on the top of the steam pot body outer layer (1101), and an areabetween the steam pot body outer layer (1101) and the steam pot bodyinner layer (1102) is arranged for vacuum. A steam pot cooling ring(1107) is sheathed on the exterior of the steam pot body inner layer(1102), forming a closed cooling area between the steam pot body innerlayer (1102) and the steam pot cooling ring (1107). The cooling area isconnected with a refrigerator via a steam pipe passing through the steampot body outer layer (1101).
 3. The onboard multi-functionalthermal-insulation and explosion-proof pressure steamer according toclaim 2, wherein the steamer body (1) is also provided with a remainingsteam discharge outlet (1105) and a steam exhaust port (1104). Anextractor fan (5) is provided in the remaining steam discharge outlet(1105), which is connected with a steam collection ring (16) provided onthe steam pot (11) and located above the steam pot cover (14). The steamcollection ring (16) is hollow and annular, and fixedly provided on thetop of the steam pot body inner layer (1102), and an opening of thesteam collection ring (16) is provided on an annular surface of thesteam collection ring (16) facing the center of the steam pot body innerlayer (1102). The steam pot body inner layer (1102) is connected withthe interior of the steam collection ring (16) through an opening of thesteam collection ring (16), and the steam exhaust port (1104) providedon the steam collection ring (16) is connected with the remaining steamdischarge outlet (1105); the steam exhaust port (1104) is connected witha broken bridge in the steam pot (11) through an exhaust steam pipe, anda pressure regulating valve (13) is provided on the steam exhaust port(1104); the invention also comprises a steam pot inlet (1103), which isprovided in the center at the bottom of the steam pot (11) and connectedwith a broken bridge in the steam pot (11) by passing through the steampot body outer layer (1101) and the steam pot body inner layer (1102).4. The onboard multi-functional thermal-insulation and explosion-proofpressure steamer according to claim 3, wherein the pressure regulatingvalve (13) comprises a hollow and columnar valve seat (1303) and apressure regulating rod (1301). One end of the valve seat (1303) isconnected with a valve seat gland (1302), and the other end thereof isconnected with a pressure regulating seat (1311). The valve seat gland(1302) and the pressure regulating seat (1311) are sealed and connectedwith an inner wall of the valve seat (1303), an internal threadthrough-hole is provided on the valve seat gland (1302), and one end ofthe pressure regulating rod (1301) is extended into the valve seat(1303) and is in threaded connection with the internal threadthrough-hole on the valve seat (1303); a pressure regulating valveelement (1307) is slidably provided in the valve seat (1303), a bump isprovided on one end of the pressure regulating valve element (1307)facing the pressure regulating rod (1301), and a blind hole is providedon the bump. A pressure regulating rod gland (1304) is sheathed on thebump, fixedly connected with the bump, and slidably connected with thevalve seat (1303). One end of the pressure regulating rod (1301), whichis extended into the valve seat (1303), passes through the through-holeon the pressure regulating rod gland (1304) and is movably provided inthe blind hole. A limiting shaft shoulder is provided on the pressureregulating rod (1301), with a diameter greater than that of thethrough-hole on the pressure regulating rod gland (1304). The limitingshaft shoulder is located in the area enclosed by the pressureregulating rod gland (1304) and the pressure regulating valve element(1307); two annular regulating valve sealing rings (1305) are providedand sheathed on the pressure regulating valve element (1307), and asteam inlet annular groove is provided on the pressure regulating valveelement (1307) between the two annular regulating valve sealing rings(1305). The central axis of the steam inlet annular groove and thecentral axis of the valve element are on the same straight line.Multiple steam inlet channels are provided in the steam inlet annulargroove and all the central axes of the steam inlet channels are in thesame plane, perpendicular to the central axis of the valve element. Asteam inlet (1306) is provided on the valve seat (1303) and connectedwith the steam inlet annular groove; a steam flow channel is provided onone end of the pressure regulating valve element (1307) away from thepressure regulating rod (1301), and the steam flow channel is connectedwith the steam inlet channel; a steam exhaust chamber is provided on oneend of the valve seat (1303) away from the pressure regulating rod(1301), and a steam exhaust valve element (1309) and a spring (1310) areprovided in the steam exhaust chamber; a steam exhaust sealing gasket(1308) is fixedly provided on the steam exhaust valve element (1309) andarranged against the steam flow channel, and the steam exhaust chamberis connected with the steam flow channel through the steam exhaustsealing gasket (1308); a bolt hole is provided in the center of thepressure regulating seat (1311), a stroke regulating bolt (1312) passesthrough the bolt hole and is provided opposite to the steam exhaustvalve element (1309), one end of the spring (1301) is arranged againstthe steam exhaust valve element (1309), and the other end thereof isarranged against the pressure regulating seat (1311); a regulating valvesteam exhaust port (1313) is provided on one end of the valve seat(1303) connected with the pressure regulating seat (1311), and theregulating valve steam exhaust port (1313) is connected with the steamexhaust chamber through a steam exhaust channel on the pressureregulating seat (1311).
 5. The onboard multi-functionalthermal-insulation and explosion-proof pressure steamer according toclaim 1, wherein the steam container cover (19) comprises a steamcontainer body and fasteners provided on four sides of the steamcontainer body, fastener grooves are provided on four sides of an openend of the steam container (18), and the fasteners are matched with thefastener grooves.
 6. The onboard multi-functional thermal-insulation andexplosion-proof pressure steamer according to claim 1, wherein the steampot cover (14) comprises a pot cover body (1401), a pot cover lockingbody (1402) is connected to the pot cover body (1401), multiple chutesare provided on the pot cover locking body (1402), locking rods (1403)are slidably provided in the chutes, the locking rods (1403) are evenlyarranged on the pot cover locking body (1402), and the locking rods(1403) are provided from the center of the pot cover locking body (1402)to the edge of the pot cover locking body (1402); the top of the steampot (11) is provided with clamping grooves with the same number as thelocking rods (1403), the clamping grooves are located in the samehorizontal plane, and the locking rods (1403) are matched and connectedwith the clamping grooves; one end of the locking rod (1403) is extendedout from the pot cover locking body (1402) and is clamped in theclamping groove, the other end thereof is connected with a drivingdevice, and the driving device drives the locking rods (1403) to extendor retract synchronously.
 7. The onboard multi-functionalthermal-insulation and explosion-proof pressure steamer according toclaim 6, wherein the driving device comprises a locking knob (1404),driving grooves with the same number as the chutes are provided on thelocking knob (1404), one end of the locking rod (1403) close to thecenter of the pot cover locking body (1402) is connected with thedriving groove through a locking sliding pin (1405), the locking slidingpin (1405) is rotatably connected with the locking rod (1403) andslidably provided in the driving groove, and the central axes of thelocking sliding pin (1405) are vertical to the plane of the pot coverlocking body (1402); the driving groove is provided from the center tothe edge of the locking knob (1404), the locking knob (1404) is rotated,and the locking sliding pin (1405) slides in the driving groove to drivethe locking rods (1403) to extend or retract.
 8. The onboardmulti-functional thermal-insulation and explosion-proof pressure steameraccording to claim 7, also comprising a pot cover locking lid (1407),wherein the pot cover locking lid (1407) is connected with the pot coverlocking body (1402) through a regulating bolt (1406) provided at thecenter of the pot cover locking lid (1407), and the rotating centralline of the locking knob (1404) and the rotating central line of theregulating bolt (1406) are on the same straight line; the regulatingbolt (1406) is in threaded connection with the pot cover locking body(1402) after passing through the pot cover locking lid (1407) and thelocking knob (1404) in turn, the pot cover body (1401) is slidablyconnected with the pot cover locking body (1402) through multiplesliding connecting pins (1410), a limiting bump is respectively providedon both ends of the sliding connecting pin (1410), and the pot coverbody (1401) and the pot cover locking body (1402) are located betweentwo limiting bumps on the same sliding connecting pin (1410); a blindhole is provided at the center of the pot cover body (1401), one end ofthe regulating bolt (1406) passing through the pot cover locking body(1402) is opposite to the blind hole; when the regulating bolt (1406) isextended out towards the pot cover body (1401), the regulating bolt(1406) is arranged against the blind hole; the pot cover locking lid(1407), the locking knob (1404) and the pot cover locking body (1402)are sheathed on the regulating bolt (1406); a rotary operating rod(1411) is provided on the locking knob (1404), an arc rotary operatinggroove is provided on the position of the pot cover locking lid (1407)corresponding to the rotary operating rod (1411), one end of the rotaryoperating rod (1411) is fixedly connected with the locking knob (1404),and the other end thereof is provided towards the pot cover locking lid(1407) and is extended out from the rotary operating groove; the rotaryoperating rod (1411) slides along the rotary operating groove to drivethe locking knob (1404) to rotate.
 9. The onboard multi-functionalthermal-insulation and explosion-proof pressure steamer according toclaim 8, wherein guide holes with the same number as the chutes arefixedly provided at the edge of the pot cover locking body (1402), andone end of the locking rod (1403) away from the center of the pot coverlocking body (1402) is slidably provided in the guide hole.
 10. Theonboard multi-functional thermal-insulation and explosion-proof pressuresteamer according to claim 9, it further comprises a locking safety pin(1412), wherein the locking safety pin (1412) comprises a movable pin(14091) and an anti-release seat (14092). One end of the movable pin(14091) is connected with a silicon rubber expansion and sealing gasket(14093), the anti-release seat (14092) is fixedly connected with the potcover body (1401), the silicon rubber expansion and sealing gasket(14093) is provided in the area enclosed by the anti-release seat(14092) and the pot cover body (1401), and this area is connected withthe interior of the steam pot (11); the other end of the movable pin(14091) is vertically extended out towards the pot cover locking body(1402). A through-hole is provided on the pot cover locking body (1402)and located in a chute, a safety hole is provided on the locking rod(1403) in this chute, and the movable pin (14091) is matched with thesafety hole. When the steam pressure in the steam pot (11) rises, themovable pin (14091) is squeezed by the silicon rubber expansion andsealing gasket (14093) and extended out towards the locking rod (1403);when the steam pressure in the steam pot (11) drops, the silicon rubberexpansion and sealing gasket (14093) is reset, and the movable pin(14091) is retracted.
 11. The onboard multi-functionalthermal-insulation and explosion-proof pressure steamer according toclaim 10, wherein an annular sealing ring (1408) is provided between thepot cover body (1401) and the steam pot (11).
 12. The onboardmulti-functional thermal-insulation and explosion-proof pressure steameraccording to claim 1, wherein a water tank (12) with an open and hollowupper end is also provided in the steamer body (1), a water tank cover(15) is provided on the open end of the water tank (12), and both thewater tank (12) and the steam pot (11) are located in the area enclosedby the steamer body (1) and the steamer outer cover (2); a water levelgauge mounting hole (1205), a temperature measuring probe hole, adrinking water pipe hole (1206) and a water filling nozzle are providedon the water tank cover (15), a water level gauge (110) is mounted inthe water level gauge mounting hole (1205), and a temperature measuringprobe (111) is mounted in the temperature measuring probe hole; atelescopic drinking water pipe (112) is provided in the drinking waterpipe hole (1206), and the telescopic drinking water pipe (112) comprisesa telescopic outer pipe (1121) and a silicon rubber hose (1122), whereinthe telescopic outer pipe (1121) is sheathed on the exterior of thesilicon rubber hose (1122) with one end extended out of the water tank(12) as a water outlet end and the other end thereof located in thewater tank (12) as a water inlet end. A limiting bump is provided on thetelescopic outer pipe (1121) and arranged against the water tank (12)through the telescopic spring (1310), and the limiting bump is providedin the water tank (12). One end of the silicon rubber hose (1122) isconnected with a water outlet end of the telescopic outer pipe (1121),and the other end thereof is connected with the interior of the watertank (12) through a first water pump (41); the water tank (12) is alsoconnected with the heating device.
 13. The onboard multi-functionalthermal-insulation and explosion-proof pressure steamer according toclaim 12, wherein the water tank (12) comprises a water tank outer layer(1201) and a water tank inner layer (1202), the water tank outer layer(1201) is sheathed on the exterior of the water tank inner layer (1202),and the top of the water tank inner layer (1202) is sealed and connectedwith that of the water tank outer layer (1201); the area enclosed by thewater tank inner layer (1202) and the water tank outer layer (1201) is avacuum area.
 14. The onboard multi-functional thermal-insulation andexplosion-proof pressure steamer according to claim 13, wherein a watertank inlet (1203) is provided on the bottom of the water tank (12), thewater tank inlet (1203) is connected with the interior of the water tank(12), and the water tank inlet (1203) is connected with the heatingdevice.
 15. The onboard multi-functional thermal-insulation andexplosion-proof pressure steamer according to claim 14, wherein atemperature measuring hole is also provided on the water tank cover(15), a temperature measuring probe (111) is provided in the temperaturemeasuring hole, and one end of the temperature measuring probe (111) isextended into the water tank (12).
 16. The onboard multi-functionalthermal-insulation and explosion-proof pressure steamer according toclaim 1, wherein the steamer outer cover (2) comprises an annularsteamer outer cover seat (21), a steam pot outer cover body (22)covering the steamer outer cover seat (21), and a water tank outer coverbody (23); the steamer outer cover seat (21) is in matched connectionwith the steamer body (1), a partition plate (24) is provided in thesteamer outer cover seat (21), the area in the steamer outer cover seat(21) is divided into an area of the steam pot (11) and an area of thewater tank (12) by means of the partition plate (24); the area of thesteam pot (11) is covered with the steam pot outer cover body (22), andthe area of the water tank (12) is covered with the water tank outercover body (23); a bump is provided on the partition plate (24), arotating shaft (25) is rotatably connected to the bump, and both thewater tank outer cover body (23) and the steam pot outer cover body (22)are rotatably connected with the rotating shaft (25); two ends of therotating shaft (25) are rotatably connected with two correspondingsidewalls of the steamer outer cover seat (21), respectively; and twoends of the partition plate (24) are also fixedly connected with twocorresponding sidewalls of the steamer outer cover seat (21),respectively.
 17. The onboard multi-functional thermal-insulation andexplosion-proof pressure steamer according to claim 12, also comprisinga car washing water tank (7), a car washing nozzle connecting pipe (65)is connected to the car washing water tank (7), and a second water pump(42) is provided on the car washing nozzle connecting pipe (65); abendable heat exchange tube is provided in the car washing water tank(7), and the heat exchange tube is connected with the heating device.18. The onboard multi-functional thermal-insulation and explosion-proofpressure steamer according to claim 17, wherein one end of the heatingdevice is connected with the water tank (12) through a heating devicewater inlet connecting pipe (67), the other end thereof is connectedwith the steam pot inlet (1103) through a steam pot steam heatingconnecting pipe (61), and a first solenoid valve (31) is provided on thesteam pot steam heating connecting pipe (61); a water tank steam heatingconnecting pipe (62) is connected to the steam pot steam heatingconnecting pipe (61) through a tee, and one end of the water tank steamheating connecting pipe (62) away from the steam pot steam heatingconnecting pipe (61) is connected with the water tank inlet (1203); asteam heating outlet is provided on the top of the water tank (12), thesteam heating outlet is connected with one end of the heat exchange tubethrough a car washing water tank remaining steam return pipe (64), theother end of the heat exchange tube is connected with the steam potsteam heating connecting pipe (61) through a car washing water tankheating connecting pipe (63), and a third solenoid valve (33) isprovided on the car washing water tank heating connecting pipe (63); thefirst water pump (41) is provided on the heating device water inletconnecting pipe (67); also comprising a drinking boiled water connectingpipe (66), one end of the drinking boiled water connecting pipe (66) isconnected with the heating device water inlet connecting pipe (67)between the first water pump (41) and the heating device, the other endthereof is extended into the water tank (12) and is connected with oneend of the silicon rubber hose (1122) away from the water outlet end ofa telescopic outer pipe (1121), and a fourth solenoid valve (34) isprovided on the drinking boiled water connecting pipe (66).
 19. Theonboard multi-functional thermal-insulation and explosion-proof pressuresteamer according to claim 18, wherein the heating device is an internalcombination engine exhaust gas remaining heat extraction device (8) thatis connected with an internal combination engine exhaust device.
 20. Theonboard multi-functional thermal-insulation and explosion-proof pressuresteamer according to claim 19, wherein the internal combination engineexhaust gas remaining heat extraction device (8) comprises multiplebranch pipes, a flange plate is provided between the internalcombination engine and the internal combination engine exhaust device,one end of each of the branch pipes is connected with a gas combinationpipe, and the other end thereof is connected with the flange plate; aheat conversion device is provided in each branch pipe, a one-way flowheating channel and a high-temperature exhaust gas channel closed toeach other are provided in the heat conversion device, and heatingchannels in the branch pipes are connected successively to form a watervapor channel; one end of the water vapor channel is connected with thewater tank (12) through the heating device water inlet connecting pipe(67), and the other end thereof is connected with the steam pot steamheating connecting pipe (61).
 21. The onboard multi-functionalthermal-insulation and explosion-proof pressure steamer according toclaim 20, wherein the heat conversion device is characterized into thata one-way flow heating channel and a high-temperature exhaust gaschannel independent from each other are provided in a double-deckchamber, the surface of the high-temperature exhaust gas channel has afin-like structure, and the water vapor channel has a return-typestructure.
 22. The onboard multi-functional thermal-insulation andexplosion-proof pressure steamer according to claim 21, wherein the heatconversion device has a wedge heat exchange structure, thehigh-temperature exhaust gas channel surface has an annular fin-likestructure, and the water vapor channel is provided at the tube pass, andthe high-temperature exhaust gas channel is provided at the center andthe shell pass.
 23. The onboard multi-functional thermal-insulation andexplosion-proof pressure steamer according to claim 22, wherein the tubepass shape of the water vapor channel has a sinusoidal wave surroundingstructure.
 24. The onboard multi-functional thermal-insulation andexplosion-proof pressure steamer according to claim 21, wherein the heatconversion device is a cylindrical tubular heat conversion device, andtwo ends thereof have a tapered structure, the water vapor channel isprovided between the heat conversion device heating outer layer and theheat conversion device heating inner layer, the water vapor channel is arectangular water vapor channel, the surfaces of the heat conversiondevice heating outer layer and the heat conversion device heating innerlayer have a fin-like structure, the tube pass of the water vaporchannel has an S-curve surrounding shape, the water vapor channel isprovided at the tube pass, and the high-temperature exhaust gas channelis provided at an inner exhaust gas flow chamber and an outer exhaustgas flow chamber in the heat conversion device.
 25. The onboardmulti-functional thermal-insulation and explosion-proof pressure steameraccording to claim 21, wherein the heat conversion device isrectangular, the water vapor channel is provided in the heat conversiondevice, a plate fin-like heating outer layer of the heat conversiondevice is provided on the upper and lower parts of the water vaporchannel respectively, the tube pass of the water vapor channel has aplate return-type shape, the water vapor channel is provided at the tubepass, and the high-temperature exhaust gas channel is provided at theouter exhaust gas flow chamber between the heat conversion deviceheating outer layer and the branch pipe.
 26. The onboardmulti-functional thermal-insulation and explosion-proof pressure steameraccording to claim 18, wherein the heating device is an electric heatingsteam generator, the electric heating steam generator comprises a steamshell and an electric heating pipe provided in the steam shell, a waterinlet and a steam outlet are provided on the steam shell, the steamoutlet is connected with the steam pot steam heating connecting pipe(61), and the water inlet is connected with the heating device waterinlet connecting pipe (67).